Pipe-coupling.



PATENTED JULY 21, 190.3. -A. PROFITLIGH & H. GTTNSTER.

PIPE \GOUPLING.

APPLICATION FILED JAN. 20, 1903.

N0 MODEL.

tit;

UNITED STATES Patented July 21, 1903.

PATENT ()FFICE.

PIPE-COUPLiNG.

SPECIFICATION forming part of Letters Patent N 0. 733,995, dated July 21, 1903. Application filed January 20,1903. Serial No. 189,739. (No model.)

To all whom it may concern:

Be it known that we, ALEXANDER P OEIT- LICH and HEINRICH GUNsTER, citizens of the German Empire, and residents of Unkel-onthe-Rhine, Germany, have invented certain new and useful Improvements in Coupling of Pipes,of which the following is a specification.

Our invention relates to .a new pipe 'coupling, as herein described; and the object of; our invention is to provide an easy and simgitudinally-split sleeve, the two halves a b of which are adapted to interlock, as at a b, Fig. 3. The sleeve diminishes from its rounded central portion uniformly toward both ends, which are conical. These ends are threaded, as at a 19*, for engagement with nuts 172. On its inner face a circumferential groove or recess formed on the sleeve is adapted for the reception of a flexible packing-ring r. 4

In use the ends of the pipes A to be coupled are embraced by ring 1", the divided sleeve is fitted over the same, and the nuts m are screwed .up to forcethe sleeve-sections together and compress the packing. Thus a perfectly tight joint is obtained.

What we claim as our invention, and desire to protect by Letters Patent, is A pipe-coupling composed of a divided recessed sleeve having coniform threaded ends, nuts engaging said ends, and a flexible packing engaging the recess,substantially as specified.

' Signed by us at Dusseldorf, Germany, this 6th day of January, 1903. v

' ALEXANDER PROFITLICH.

HEINRICH GUNSTER.

Witn ess es WILLIAM ESSENWEIN, PETER LIEBER. 

